cohomology group

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cohomology group [′kō·hə′mäl·ə·jē ‚grüp]

(mathematics)

One of a series of Abelian groupsHⁿ(K) that are used in the study of a simplicial complexKand are closely related to homology groups, being associated with cocycles and coboundaries in the same manner as homology groups are associated with cycles and boundaries.

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